Hierarchical control of motor units in voluntary contractions.

  title={Hierarchical control of motor units in voluntary contractions.},
  author={C. J. De Luca and P. Contessa},
  journal={Journal of neurophysiology},
  volume={107 1},
For the past five decades there has been wide acceptance of a relationship between the firing rate of motor units and the afterhyperpolarization of motoneurons. It has been promulgated that the higher-threshold, larger-soma, motoneurons fire faster than the lower-threshold, smaller-soma, motor units. This relationship was based on studies on anesthetized cats with electrically stimulated motoneurons. We questioned its applicability to motor unit control during voluntary contractions in humans… CONTINUE READING
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